There are many different kinds of quadrilaterals, yet all have several things in common: all of them have 4 sides, room coplanar, have actually two diagonals, and the sum of their 4 interior angles equates to 360 degrees. This is how they space alike, but what makes them different?

We know numerous quadrilaterals by their distinct shapes and also properties, choose squares. Remember, if friend see the word quadrilateral, the does not necessarily mean a number with special properties favor a square or rectangle! In word problems, be cautious not come assume the a quadrilateral has actually parallel sides or same sides unless that is stated.

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Special Quadrilaterals

 A parallelogram has actually two parallel bag of opposite sides. A rectangle has actually two bag of opposite sides parallel, and four ideal angles. It is likewise a parallelogram, because it has two pairs of parallel sides. A square has actually two bag of parallel sides, four right angles, and all four sides room equal. It is likewise a rectangle and a parallelogram. A rhombus is identified as a parallel with 4 equal sides. Is a rhombus always a rectangle? No, since a rhombus go not have to have 4 best angles. Trapezoids only have actually one pair of parallel sides. It"s a form of quadrilateral the is no a parallelogram. (British name: Trapezium) Kites have 2 pairs of surrounding sides that room equal.

We have the right to use a Venn diagram to aid us team the varieties of quadrilaterals.

A Venn diagram provides overlapping one to show relationships between groups of objects. Every "quadrilaterals" can be separated right into three sub-groups: basic quadrilaterals, parallelograms and trapezoids.

Is a rectangle constantly a rhombus? No, since all four sides of a rectangle don"t have to be equal. However, the sets of rectangles and rhombuses do intersect, and also their intersection is the set of squares—all squares space both a rectangle and a rhombus.

We deserve to put squares in the intersection of the two circles.

From this diagram, you deserve to see the a square is a quadrilateral, a parallelogram, a rectangle, and also a rhombus!

Is a trapezoid a parallelogram? No, since a trapezoid has actually only one pair that parallel sides. That is why us must present the collection of trapezoids in a separate circle on the Venn diagram.

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What around kites? Kites room quadrilaterals that can it is in parallelograms. If their 2 pairs the sides room equal, it becomes a rhombus, and if their angles room equal, it becomes a square.

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